My Little Expat Kitchen: Tsoureki is a sweet, braided, Greek Easter yeast bread that is traditionally made on Holy Thursday (along with the dyeing of the Easter eggs) and eaten on Easter Sunday. It is made with eggs and sugar and it is flavored with mastiha (a mastic-tree resin from the Greek island of Chios) and mahlepi, a highly aromatic spice made from the seeds of wild cherry trees. The tsoureki recipe here is as authentic as I have ever seen.